No sound when exporting iMovie project in HD (missing AAC codec)

Discussion in 'Digital Video' started by Poemmser, Jan 14, 2016.

  1. Poemmser macrumors newbie

    Jan 14, 2016
    Hi there everyone!

    I am facing a problem when trying to export a finished project from iMovie as an HD video, it has no sound!

    Here's the scenario:

    MacBook Pro (Mid 2010), OS X El Capitan 10.11.2, around 90GB free space on the hard-drive, iMovie '09 (Version8.0.6)

    The project is finished in iMovie, ready for publishing in HD, when I preview it there, no issues with the sound. However, as soon as I try to export it and select HD as the output quality, the .mov file will open without playing any sound in Quicktime. If I select the lower quality "large" it gives me an .m4v file with sound. Even when I select "export with quicktime" and manually select the audio options there (256 Kbps AAC) the final version will not have any sound.

    A few months ago I worked on another project, also exported it in HD. When I check the file info of the earlier exported project vis-à-vis that of the current one, it will say "Codec: H.264, AAC" with dimensions "1280x720", when I export the current one it is missing the AAC whilst having the same dimensions.

    I am really no expert on such questions, but I have tried to look for option in iMovie, no luck. Maybe somebody has encountered a similar problem or knows why this does not work. I would greatly appreciate any help.

    Thanks in advance!!
  2. Dave Braine macrumors 68040

    Dave Braine

    Mar 19, 2008
    Warrington, UK
    There are a few issues with earlier versions of iMovie and El Capitan, which is why I'm staying with Yosemite. This could well be one of them.

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